Re: Printers Revisited

From: Karl Auerbach <karl_at_cavebear_dot_com>
Date: Mon May 24 2004 - 03:00:25 CDT

On Sun, 23 May 2004, Ed Kennedy wrote:

> Power saving settings are adjustable on most laser printer. There is an
> internal clock that kicks in after each print job is completed and if the
> time between jobs exceeds the power saving settings, the heaters/fusers shut
> off.

The problem with the laser printers is the huge instantaneous draw they
pull when heating the fuser roller. It's more than most consumer grade
UPS's can safely source. I just did some web searching and there is a
consistent clear message" "do not plug laser printers into UPS unless UPS
rating is >= 1400VA". A UPS fire, with an acid filled battery, is not
something you want to have to deal with.

In addition, at some point - a point very quickly reached in many school
rooms and garages and basements and other places used for polling stations
- the actual building circuits and outlets will be overloaded.

My guess is that with more than a couple of voting stations with laser
printers and we'll be blowin' the breakers (or fuses) on a typical polling
place or having the fire marshall shut the place down as a safety hazard.

I don't know how many of you have dealt with fire marshalls, but they look
at such situations in very simple and stark terms: if they don't shut it
down, people will die. So they do not take "no" for an answer.

The more I think about the printer issue the more I am convinced that
laser printers have drawbacks (such as the power drain issue) that make
them not just a poor choice but actually unacceptable, no matter how many
other good attributes they may have.

        --karl--
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Received on Mon May 31 23:18:00 2004

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